Commit 4f9e0c38 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add a common helper to give the codec modalias string 



This patch provide a new common helper function,
snd_hdac_codec_modalias(), to give the codec modalias name string.
This function will be used by multiple places in the later patches.

Reviewed-by: default avatarVinod Koul <vinod.koul@intel.com>
Tested-by: default avatarSubhransu S Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent da23ac1e

include/sound/hdaudio.h

+1 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ void snd_hdac_device_exit(struct hdac_device *dev); 
int snd_hdac_device_register(struct hdac_device *codec);

void snd_hdac_device_unregister(struct hdac_device *codec);

int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name);

int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size);



int snd_hdac_refresh_widgets(struct hdac_device *codec);

int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec);

sound/hda/hdac_device.c

+15 −0
Original line number Diff line number Diff line
@@ -185,6 +185,21 @@ int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name) 
}

EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);



/**

 * snd_hdac_codec_modalias - give the module alias name

 * @codec: HDAC device

 * @buf: string buffer to store

 * @size: string buffer size

 *

 * Returns the size of string, like snprintf(), or a negative error code.

 */

int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size)

{

	return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",

			codec->vendor_id, codec->revision_id, codec->type);

}

EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);



/**

 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the

 *	HD-audio controller

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